Bar Conversion

Bar, unit of measure

The bar (symbol bar) and the millibar (symbol mbar, also mb) are units of pressure. They are not SI units, but accepted (although discouraged) for use with the SI. The bar is still widely used in descriptions of pressure because it is about the same as atmospheric pressure. The bar is defined as: 1 bar = 100 000 pascals (Pa) = 1 000 000 dynes per square centimetre. The word bar has its origin in the Greek word baros, meaning weight. Its official symbol is "bar"; the earlier "b" is now deprecated, but still often seen especially as "mb" rather than the proper "mbar" for millibars. The bar and millibar were introduced by Sir Napier Shaw in 1909 and internationally adopted in 1929.

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